A predictive approach for networked control of discrete event systems

Abstract

In this paper, we continue the work of [6] to investigate the networked control problem of discrete event systems. The problem is to find a networked supervisor so that the language generated by the supervised system is equal to a given specification language K, even when there are communication delays and losses in the observation channel and control channel between the plant and the supervisor. While the networked supervisor in [6] is not predictive, we propose a predictive networked supervisor in this paper, which predicts the impacts of communication delays and losses in control channel in determining control actions. We derive the existence condition for a predictive networked supervisor. We show that the predictive supervisor is better than the non-predictive supervisor and no other supervisors are better than the predictive supervisor.